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author | Minteck <contact@minteck.org> | 2022-08-21 17:31:56 +0200 |
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committer | Minteck <contact@minteck.org> | 2022-08-21 17:31:56 +0200 |
commit | a2df9a69dcc14cb70118cda2ded499055e7ee358 (patch) | |
tree | 6dd283e4e9452d38bce81ddaaae49b5335755842 /together/node_modules/form-data/lib/form_data.js | |
parent | 84dd0735820b16b60f600284d35183d76547a71f (diff) | |
download | pluralconnect-a2df9a69dcc14cb70118cda2ded499055e7ee358.tar.gz pluralconnect-a2df9a69dcc14cb70118cda2ded499055e7ee358.tar.bz2 pluralconnect-a2df9a69dcc14cb70118cda2ded499055e7ee358.zip |
m. update
Diffstat (limited to 'together/node_modules/form-data/lib/form_data.js')
-rw-r--r-- | together/node_modules/form-data/lib/form_data.js | 501 |
1 files changed, 501 insertions, 0 deletions
diff --git a/together/node_modules/form-data/lib/form_data.js b/together/node_modules/form-data/lib/form_data.js new file mode 100644 index 0000000..18dc819 --- /dev/null +++ b/together/node_modules/form-data/lib/form_data.js @@ -0,0 +1,501 @@ +var CombinedStream = require('combined-stream'); +var util = require('util'); +var path = require('path'); +var http = require('http'); +var https = require('https'); +var parseUrl = require('url').parse; +var fs = require('fs'); +var Stream = require('stream').Stream; +var mime = require('mime-types'); +var asynckit = require('asynckit'); +var populate = require('./populate.js'); + +// Public API +module.exports = FormData; + +// make it a Stream +util.inherits(FormData, CombinedStream); + +/** + * Create readable "multipart/form-data" streams. + * Can be used to submit forms + * and file uploads to other web applications. + * + * @constructor + * @param {Object} options - Properties to be added/overriden for FormData and CombinedStream + */ +function FormData(options) { + if (!(this instanceof FormData)) { + return new FormData(options); + } + + this._overheadLength = 0; + this._valueLength = 0; + this._valuesToMeasure = []; + + CombinedStream.call(this); + + options = options || {}; + for (var option in options) { + this[option] = options[option]; + } +} + +FormData.LINE_BREAK = '\r\n'; +FormData.DEFAULT_CONTENT_TYPE = 'application/octet-stream'; + +FormData.prototype.append = function(field, value, options) { + + options = options || {}; + + // allow filename as single option + if (typeof options == 'string') { + options = {filename: options}; + } + + var append = CombinedStream.prototype.append.bind(this); + + // all that streamy business can't handle numbers + if (typeof value == 'number') { + value = '' + value; + } + + // https://github.com/felixge/node-form-data/issues/38 + if (util.isArray(value)) { + // Please convert your array into string + // the way web server expects it + this._error(new Error('Arrays are not supported.')); + return; + } + + var header = this._multiPartHeader(field, value, options); + var footer = this._multiPartFooter(); + + append(header); + append(value); + append(footer); + + // pass along options.knownLength + this._trackLength(header, value, options); +}; + +FormData.prototype._trackLength = function(header, value, options) { + var valueLength = 0; + + // used w/ getLengthSync(), when length is known. + // e.g. for streaming directly from a remote server, + // w/ a known file a size, and not wanting to wait for + // incoming file to finish to get its size. + if (options.knownLength != null) { + valueLength += +options.knownLength; + } else if (Buffer.isBuffer(value)) { + valueLength = value.length; + } else if (typeof value === 'string') { + valueLength = Buffer.byteLength(value); + } + + this._valueLength += valueLength; + + // @check why add CRLF? does this account for custom/multiple CRLFs? + this._overheadLength += + Buffer.byteLength(header) + + FormData.LINE_BREAK.length; + + // empty or either doesn't have path or not an http response or not a stream + if (!value || ( !value.path && !(value.readable && value.hasOwnProperty('httpVersion')) && !(value instanceof Stream))) { + return; + } + + // no need to bother with the length + if (!options.knownLength) { + this._valuesToMeasure.push(value); + } +}; + +FormData.prototype._lengthRetriever = function(value, callback) { + + if (value.hasOwnProperty('fd')) { + + // take read range into a account + // `end` = Infinity –> read file till the end + // + // TODO: Looks like there is bug in Node fs.createReadStream + // it doesn't respect `end` options without `start` options + // Fix it when node fixes it. + // https://github.com/joyent/node/issues/7819 + if (value.end != undefined && value.end != Infinity && value.start != undefined) { + + // when end specified + // no need to calculate range + // inclusive, starts with 0 + callback(null, value.end + 1 - (value.start ? value.start : 0)); + + // not that fast snoopy + } else { + // still need to fetch file size from fs + fs.stat(value.path, function(err, stat) { + + var fileSize; + + if (err) { + callback(err); + return; + } + + // update final size based on the range options + fileSize = stat.size - (value.start ? value.start : 0); + callback(null, fileSize); + }); + } + + // or http response + } else if (value.hasOwnProperty('httpVersion')) { + callback(null, +value.headers['content-length']); + + // or request stream http://github.com/mikeal/request + } else if (value.hasOwnProperty('httpModule')) { + // wait till response come back + value.on('response', function(response) { + value.pause(); + callback(null, +response.headers['content-length']); + }); + value.resume(); + + // something else + } else { + callback('Unknown stream'); + } +}; + +FormData.prototype._multiPartHeader = function(field, value, options) { + // custom header specified (as string)? + // it becomes responsible for boundary + // (e.g. to handle extra CRLFs on .NET servers) + if (typeof options.header == 'string') { + return options.header; + } + + var contentDisposition = this._getContentDisposition(value, options); + var contentType = this._getContentType(value, options); + + var contents = ''; + var headers = { + // add custom disposition as third element or keep it two elements if not + 'Content-Disposition': ['form-data', 'name="' + field + '"'].concat(contentDisposition || []), + // if no content type. allow it to be empty array + 'Content-Type': [].concat(contentType || []) + }; + + // allow custom headers. + if (typeof options.header == 'object') { + populate(headers, options.header); + } + + var header; + for (var prop in headers) { + if (!headers.hasOwnProperty(prop)) continue; + header = headers[prop]; + + // skip nullish headers. + if (header == null) { + continue; + } + + // convert all headers to arrays. + if (!Array.isArray(header)) { + header = [header]; + } + + // add non-empty headers. + if (header.length) { + contents += prop + ': ' + header.join('; ') + FormData.LINE_BREAK; + } + } + + return '--' + this.getBoundary() + FormData.LINE_BREAK + contents + FormData.LINE_BREAK; +}; + +FormData.prototype._getContentDisposition = function(value, options) { + + var filename + , contentDisposition + ; + + if (typeof options.filepath === 'string') { + // custom filepath for relative paths + filename = path.normalize(options.filepath).replace(/\\/g, '/'); + } else if (options.filename || value.name || value.path) { + // custom filename take precedence + // formidable and the browser add a name property + // fs- and request- streams have path property + filename = path.basename(options.filename || value.name || value.path); + } else if (value.readable && value.hasOwnProperty('httpVersion')) { + // or try http response + filename = path.basename(value.client._httpMessage.path || ''); + } + + if (filename) { + contentDisposition = 'filename="' + filename + '"'; + } + + return contentDisposition; +}; + +FormData.prototype._getContentType = function(value, options) { + + // use custom content-type above all + var contentType = options.contentType; + + // or try `name` from formidable, browser + if (!contentType && value.name) { + contentType = mime.lookup(value.name); + } + + // or try `path` from fs-, request- streams + if (!contentType && value.path) { + contentType = mime.lookup(value.path); + } + + // or if it's http-reponse + if (!contentType && value.readable && value.hasOwnProperty('httpVersion')) { + contentType = value.headers['content-type']; + } + + // or guess it from the filepath or filename + if (!contentType && (options.filepath || options.filename)) { + contentType = mime.lookup(options.filepath || options.filename); + } + + // fallback to the default content type if `value` is not simple value + if (!contentType && typeof value == 'object') { + contentType = FormData.DEFAULT_CONTENT_TYPE; + } + + return contentType; +}; + +FormData.prototype._multiPartFooter = function() { + return function(next) { + var footer = FormData.LINE_BREAK; + + var lastPart = (this._streams.length === 0); + if (lastPart) { + footer += this._lastBoundary(); + } + + next(footer); + }.bind(this); +}; + +FormData.prototype._lastBoundary = function() { + return '--' + this.getBoundary() + '--' + FormData.LINE_BREAK; +}; + +FormData.prototype.getHeaders = function(userHeaders) { + var header; + var formHeaders = { + 'content-type': 'multipart/form-data; boundary=' + this.getBoundary() + }; + + for (header in userHeaders) { + if (userHeaders.hasOwnProperty(header)) { + formHeaders[header.toLowerCase()] = userHeaders[header]; + } + } + + return formHeaders; +}; + +FormData.prototype.setBoundary = function(boundary) { + this._boundary = boundary; +}; + +FormData.prototype.getBoundary = function() { + if (!this._boundary) { + this._generateBoundary(); + } + + return this._boundary; +}; + +FormData.prototype.getBuffer = function() { + var dataBuffer = new Buffer.alloc( 0 ); + var boundary = this.getBoundary(); + + // Create the form content. Add Line breaks to the end of data. + for (var i = 0, len = this._streams.length; i < len; i++) { + if (typeof this._streams[i] !== 'function') { + + // Add content to the buffer. + if(Buffer.isBuffer(this._streams[i])) { + dataBuffer = Buffer.concat( [dataBuffer, this._streams[i]]); + }else { + dataBuffer = Buffer.concat( [dataBuffer, Buffer.from(this._streams[i])]); + } + + // Add break after content. + if (typeof this._streams[i] !== 'string' || this._streams[i].substring( 2, boundary.length + 2 ) !== boundary) { + dataBuffer = Buffer.concat( [dataBuffer, Buffer.from(FormData.LINE_BREAK)] ); + } + } + } + + // Add the footer and return the Buffer object. + return Buffer.concat( [dataBuffer, Buffer.from(this._lastBoundary())] ); +}; + +FormData.prototype._generateBoundary = function() { + // This generates a 50 character boundary similar to those used by Firefox. + // They are optimized for boyer-moore parsing. + var boundary = '--------------------------'; + for (var i = 0; i < 24; i++) { + boundary += Math.floor(Math.random() * 10).toString(16); + } + + this._boundary = boundary; +}; + +// Note: getLengthSync DOESN'T calculate streams length +// As workaround one can calculate file size manually +// and add it as knownLength option +FormData.prototype.getLengthSync = function() { + var knownLength = this._overheadLength + this._valueLength; + + // Don't get confused, there are 3 "internal" streams for each keyval pair + // so it basically checks if there is any value added to the form + if (this._streams.length) { + knownLength += this._lastBoundary().length; + } + + // https://github.com/form-data/form-data/issues/40 + if (!this.hasKnownLength()) { + // Some async length retrievers are present + // therefore synchronous length calculation is false. + // Please use getLength(callback) to get proper length + this._error(new Error('Cannot calculate proper length in synchronous way.')); + } + + return knownLength; +}; + +// Public API to check if length of added values is known +// https://github.com/form-data/form-data/issues/196 +// https://github.com/form-data/form-data/issues/262 +FormData.prototype.hasKnownLength = function() { + var hasKnownLength = true; + + if (this._valuesToMeasure.length) { + hasKnownLength = false; + } + + return hasKnownLength; +}; + +FormData.prototype.getLength = function(cb) { + var knownLength = this._overheadLength + this._valueLength; + + if (this._streams.length) { + knownLength += this._lastBoundary().length; + } + + if (!this._valuesToMeasure.length) { + process.nextTick(cb.bind(this, null, knownLength)); + return; + } + + asynckit.parallel(this._valuesToMeasure, this._lengthRetriever, function(err, values) { + if (err) { + cb(err); + return; + } + + values.forEach(function(length) { + knownLength += length; + }); + + cb(null, knownLength); + }); +}; + +FormData.prototype.submit = function(params, cb) { + var request + , options + , defaults = {method: 'post'} + ; + + // parse provided url if it's string + // or treat it as options object + if (typeof params == 'string') { + + params = parseUrl(params); + options = populate({ + port: params.port, + path: params.pathname, + host: params.hostname, + protocol: params.protocol + }, defaults); + + // use custom params + } else { + + options = populate(params, defaults); + // if no port provided use default one + if (!options.port) { + options.port = options.protocol == 'https:' ? 443 : 80; + } + } + + // put that good code in getHeaders to some use + options.headers = this.getHeaders(params.headers); + + // https if specified, fallback to http in any other case + if (options.protocol == 'https:') { + request = https.request(options); + } else { + request = http.request(options); + } + + // get content length and fire away + this.getLength(function(err, length) { + if (err && err !== 'Unknown stream') { + this._error(err); + return; + } + + // add content length + if (length) { + request.setHeader('Content-Length', length); + } + + this.pipe(request); + if (cb) { + var onResponse; + + var callback = function (error, responce) { + request.removeListener('error', callback); + request.removeListener('response', onResponse); + + return cb.call(this, error, responce); + }; + + onResponse = callback.bind(this, null); + + request.on('error', callback); + request.on('response', onResponse); + } + }.bind(this)); + + return request; +}; + +FormData.prototype._error = function(err) { + if (!this.error) { + this.error = err; + this.pause(); + this.emit('error', err); + } +}; + +FormData.prototype.toString = function () { + return '[object FormData]'; +}; |